What about Microsoft Bob, can I use that?

Sure, on the way there we can stop in '95 to pick up a copy of Bob... but you are on your own for getting it working.

If you are Bill Gates you find your wife in the process of creating Bob.

I just looked and I was very disappointed to find Bill doesn't have a son named Robert. :/

You don't even have to travel that far. Even on Windows10 you can install different shells(Cairo, bb4win, classic shell, etc).

Just so you know, classic shell is deprecated.

Open shell [0] is the up to date one.

[0] https://open-shell.github.io/Open-Shell-Menu/